Problem With 7Ch Audio

[dj-big]

hey guys ,

i want to encode audio file with this info :

Audio
ID : 1
Format : DTS
Format/Info : Digital Theater Systems
Format profile : ES
Mode : 16
Format settings, Endianness : Big
Codec ID : A_DTS
Duration : 3h 48mn
Bit rate mode : Constant
Bit rate : 1 509 Kbps
Channel(s) : 7 channels / 6 channels
Channel positions : Front: L C R, Side: L R, Back: C, LFE / Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Compression mode : Lossy
Stream size : 2.41 GiB (100%)
Default : Yes
Forced : No

at first i just select it in megui and encode it ( i selected keep orginal channel and convert to aac ) after encode it :

Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : 40
Duration : 3h 49mn
Bit rate mode : Variable
Bit rate : 192 Kbps
Maximum bit rate : 233 Kbps
Channel(s) : 7 channels
Sampling rate : 48.0 KHz / 24.0 KHz
Compression mode : Lossy
Stream size : 315 MiB (100%)
Writing library : Nero AAC codec 1.5.4.0
Encoding settings : -cbr 192000 -he
Encoded date : UTC 2013-09-08 12:19:13
Tagged date : UTC 2013-09-08 12:36:55


the problem is when i want to mux it with video there is just a chapter i mean in mkvtoolnix when i mux it or with megui muxed files dont have audio i thought maybe the 7ch is problem so how can i downmix 7ch to 6ch ? and is the main problem is ch or anything elese ?

[tebasuna51]

...
at first i just select it in megui and encode it ( i selected keep orginal channel and convert to aac ) after encode it ...

Please put the MeGUI log file.